Armaş 77MO/RC Hydraulically/Pneumatically Controlled Monitor valve is normally closed. The valve opens when the 3-way ball valve is turned on or signaled to port 1 of the remote HR3W pilot. When the 3-way ball valve is set to the closed position or the signal on port 1 of the HR3W pilot is interrupted, the valve gradually closes drip tight, reducing the risk of water hammer damage.
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